package com.xinyue.framework.config;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONReader;
import com.alibaba.fastjson2.JSONWriter;
import com.alibaba.fastjson2.filter.Filter;
import com.xinyue.common.constant.Constants;
import java.nio.charset.Charset;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

/**
 * Redis使用FastJson序列化
 *
 * @author ruoyi
 */
public class FastJson2JsonRedisSerializer<T> implements RedisSerializer<T> {

  public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

  static final Filter AUTO_TYPE_FILTER = JSONReader.autoTypeFilter(Constants.JSON_WHITELIST_STR);

  private Class<T> clazz;

  public FastJson2JsonRedisSerializer(Class<T> clazz) {
    super();
    this.clazz = clazz;
  }

  @Override
  public byte[] serialize(T t) throws SerializationException {
    if (t == null) {
      return new byte[0];
    }
    return JSON.toJSONString(t, JSONWriter.Feature.WriteClassName).getBytes(DEFAULT_CHARSET);
  }

  @Override
  public T deserialize(byte[] bytes) throws SerializationException {
    if (bytes == null || bytes.length <= 0) {
      return null;
    }
    String str = new String(bytes, DEFAULT_CHARSET);

    return JSON.parseObject(str, clazz, AUTO_TYPE_FILTER);
  }
}
